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(11) | EP 0 336 368 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | N2-(1-carboxy-3-phenylpropyl)-L-lysine derivative and process of producing lysinopril using the compound |
| (57) An N²-(1-substituted-3-phenylpropyl)-L-lysine derivative is disclosed and is represented
by formula (I)
wherein R¹ represents an acyl type or urethane type protective group; R² represents a hydrogen atom, an alkyl group, or an aralkyl group. X represents a cyano (CN) group or an aminocarbonyl (CONH₂) group; and the mark * represents the (S) configuration of theasymmetric carbon atom. |